stevens graduated from u.c. berkeley in 1982 with a bachelor's degree in history. >>> this morning, michigan police are still working to determine if the body of teamsters leader jimmy hoffa is buried beneath a home in detroit. yesterday, all eyes were on the home as police removed two soil samples from underneath a shed. they were acting on a tip from a man dying of cancer who says he saw a body being buried at the home around the time hoffa disappeared. a scan of the area showed something under a concrete slab, but police are not sure what exactly it is. >> it could be a dead body. if not hoffa, then somebody else. or it could be the root of a tree. who notice. >> police say the soil samples are being tested for traces of human remains, and that nothing else was found during the dig. hoff that was last seen outside -- hoffa was last seen outside a restaurant in suburban detroit back in 1975. >>> new this morning, it's official. the n.f.l. referees have approved a new eight year contract. now that contract come